hexa desimal

[andi_diary]

hello..
i have a problem...
i try to open excel file for example book1.xls
and i write in cell A1 the word "red"
after that i open this file via hexa editor
i can find the opcode of LABELSST and the contents of cell A1 is different offset with the opcode...
could you help me to explain how to find after we can find the opcode of LABELSST or RK number, etc and we can find the index or the value this opcode

for example:
Book1.xls ==> i write in A1 the word " Red "
i find the opcode for Labelsst like this:
000008e0 : FD 00 0a 00 00 00 00 0f 00 00
the opcode FD it's explain about LABELSST
after that i find the contents of A1 in different offset
like this
000007a0 : xx xx xx xx xx 75 51 5 ==> like this..for example 75 is R, 51 is E and 50 is D...
could you help me to find the pattern to find this??
thanks before
best reggards,..
sugianto